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9. MAINTENANCE
9.1 Water replenishing and water drainage for water tank.
1. Water replenishing for water tank
•
Cut off the power for the unit, open the cut-off valve on hot water exit pipe and the valve at
the water using point.
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Open the cut-off valve on the water inlet pipe for tap water.
•
Cut off the valve at the water using point when there’s water flowing out from that point.
•
When water supply is finished, put through the power.
2. Water drainage for water tank
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Cut off the power for the unit and then cut off the cut -off valve the tap water inlet pipe.
•
Cut off the cut-off valve on the hot water exit pipe and the valve at the water using point.
•
Open the cut-off valve at the drain outlet.
•
When the water inside the water tank is drained out, please close the cut-off valve at the
drain outlet.
9.2 Periodical clean for the water tank
In order to ensure the hot water quality, please clean the water tank periodically by below pro
-
cedures:
•
Cut off the power.
•
Close off the cut-off valve on the inlet pipe of water tank.
•
Open the cut-off valve on the hot water exit pipe and the valve at the water using point.
•
Open the cut-off valve on the drain outlet until the water is drainaged completely.
•
Open the cut-off valve on the water inlet pipe of water tank, flush the water tank until the
water drained from the drain outlet is clean, and then close the cut-off valve on the drain
outlet.
•
Fill the water tank according to water supply operation.
•
Put through the power when the water is cleaned.
Notice:
In general, the water tank should be cleaned once every year. If the water quality is bad, please
add the clean times.
